n8n Workflow Cost Calculator accuracy and testing

Formula source

• Execution fees equal executions per month multiplied by price per execution. Runtime hours equal executions multiplied by average runtime seconds, divided by 3,600. Compute cost is runtime hours multiplied by compute cost per hour. Total monthly cost adds fixed cost, execution fees, and compute cost.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• Runtime is averaged across all executions.
• Compute pricing is treated as a flat hourly rate.
• The calculator runs locally in the browser and does not inspect workflow data.

Unit handling

• Executions per Month accepts numeric values.
• Average Runtime accepts values in sec.
• Price per Execution accepts values in $.
• Compute Cost per Hour accepts values in $.
• Fixed Monthly Cost accepts values in $.
• Total Monthly Cost is displayed as currency.
• Execution Fees is displayed as currency.
• Compute Cost is displayed as currency.
• Cost per Execution is displayed as currency.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Currency outputs are displayed with standard US dollar formatting.
• Input precision follows configured step values where provided.

Version history

Change log